Eli5 why do wee see things we dont focus on blurry ? Why cant our eyes see everything sharp ?
In: Biology
Our eyes work by using a lens to focus light onto a light sensitive area at the back of them. Because a lens can only have exactly one distance in focus at a time, light from every other distance is either over focused or under focused causing it to be blurry. In practically there is a thin slice of distances that appear in focus but you can’t have everything from infinity to right in front of you be in focus at once.
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